794 MOSQUITOES OF NOETH AMERICA 



finely fringed. Air-tube about two and a half times as long as wide, tapering 

 outwardly ; pecten of about ten evenly spaced teeth, reaching beyond middle of 

 tube; hair-tuft rather large, situated before the outer tooth. Anal segment 

 longer than wide, ringed by the plate ; dorsal tuft a long hair and tuft on each 

 side; lateral hair single; ventral brush well developed, confined to the barred 

 area; anal gills long, tapering, equal. 



The larvae live in temporary ground-pools. 



Greater Antilles and Bahamas. 



Kingston, Jamaica, July 10, 1906 (M. Grabham) ; Santo Domingo, August, 

 1905 (A. Busek) ; San Antonio de los Baiios, Cuba (J. H. Pazos) ; Nassau, 

 Bahamas, June 34, 1903 (T. H. Coffin) ; Lake Cunningham, New Providence 

 Island, Bahamas, February 15, 1915 (H. G. Dyar). 



The thoracic median line of the adult is variable in width and in one female 

 of Dr. Grabham's original series is nearly obsolete; it is broader in the male. 

 The abdominal markings are also subject to variation, as already pointed out 

 by Theobald. We believe that the specimen from Brazil, included by Theobald 

 in his original description of Protoculex guasiserratus, was wrongly associated 

 and is not conspecific. 



AEDES SERRAXUS (Theobald) Dyar & Knab. 



Culex serratus Theobald, Mon. Culic, ii, 45, 1901. 



Culex serratus Giles, Handb. Gnats or Mosq., 2 ed., 457, 1902. 



GuTex nigripes Parker, Beyer & Pothier (not Zetterstedt) , Bull. 13, Yell. Fever Inst., 



U. S. Publ. Health and Mar.-Hosp. Serv., 37, 1903. 

 Culex serratus Lutz in Bourroul, Mosq. do Brasil, 44, 72, 1904. 

 Culex serratus Blanchard, Les Moustlques, 360, 1905. 

 Culex serratus Goeldi, Os Mosq. no Para, 95, 1905. 



Aedes meridionalis Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 189, 195, 1906. 

 Ochlerotatus serratus Coquillett (in part), U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 



19, 1906. 

 Aedes serratus Dyar & Knab, Proc. Biol. Soc. Wash., xlx, 162, 1906. 

 Protoculex serratus Theobald (In part), Mon. Culic, iv, 463, 464, 1907. 

 Culex serratus Aiken, Brit. Guiana Med. Annual, 1906, 68, 1907. 

 Aedes serratus Busck, Smiths. Misc. Colls, (quart, iss.). Hi, 64, 1908. 

 Protoculex serratus Peryassti, Os Culicid. do Brazil, 48, 215, 1908. 

 Protoculex serratus Theobald (in part), Mon. Culic, v, 401, 1910. 



Obioinai, Description or Culex sebbatus : 



Thorax dark brown, with a broad stripe of creamy-grey in the middle. Abdomen 

 brownish-black, with basal white lateral spots, especially noticeable on the apical 

 segments. Ungues of $ equal, unlserrated; of (f unequal in fore and mid legs, the 

 larger one with two teeth, the smaller with one tooth. 



J. Head brown, clothed with white scales in front and in the middle, brown above 

 and white at the sides, with a few upright yellow forked-scales; eyes purple, 

 bordered with a narrow edge of white; antennae brown, first joint and base of the 

 second testaceous, with a few fuscous scales, the remaining joints clothed with a 

 pale pubescence and with black verticillate hairs; palpi black, with a few grey scales; 

 proboscis black. 



Thorax dark brown, with a broad stripe of creamy-grey scales in the middle, ex- 

 tending from and continuous with the white in the middle of the head and passing 

 back to the scutellum; sides of the mesonotum clothed with dark curved scales, and 

 with golden hairs at the sides and back; scutellum brown, with white scales in the 

 middle and black laterally; metanotum chestnut-brown; pleurae testaceous, with 

 patches of white scales. 



Abdomen covered with dark brownish-black scales, with purplish reflections, the 

 deep yellow ground colour showing through at the base in some specimens, giving 

 an almost basally-banded appearance, which in other specimens is absent; laterally 

 there is a basal silvery-white spot, which partly shows on the dorsum, in some speci- 

 mens most clearly on the last few apical segments; first segment ochraceous, with a 

 patch of purple scales in the middle, and very pilose; posterior borders of the seg- 

 ments edged with long pale hairs; venter almost entirely clothed with white scales. 



Legs dark brown; coxae, under surfaces of the femora and the tibiae white; in 

 some lights the legs show metallic blue and deep purple reflections; ungues equal 

 and unlserrated. 



